Tools like DataGrip simplify transaction handling by offering graphical interfaces for commit, rollback, and savepoints.In SQL, COMMIT finalizes changes, ROLLBACK reverts transactions, and SAVEPOINT allows partial rollbacks.Python libraries like cx_Oracle, mysql-connector-python, psycopg2 enable explicit transaction controls.Transactions involve starting, executing SQL statements, committing or rolling back changes, and using savepoints for finer control.